The leather industry procedure is classified into three basic sub-procedures: preliminary stages, tanning, and crusting. All realistic leathers will go through these sub-processes. Proteases are nearly everyone generally used enzymes in leather fabrication. The normal fibers of leather will rupture down as the time passes. In order to protect leather from break down there are several treatments available in industry. They act as a conditioner to prevent leather from damage. Leather wears are prohibited by some of the religious groups like Judaism and Jainism.